426055557 has 4 divisors (see below), whose sum is σ = 568074080. Its totient is φ = 284037036.

The previous prime is 426055543. The next prime is 426055583. The reversal of 426055557 is 755550624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 426055557 - 2⁷ = 426055429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426055057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71009257 + ... + 71009262.

It is an arithmetic number, because the mean of its divisors is an integer number (142018520).

Almost surely, 2^426055557 is an apocalyptic number.

It is an amenable number.

426055557 is a deficient number, since it is larger than the sum of its proper divisors (142018523).

426055557 is a wasteful number, since it uses less digits than its factorization.

426055557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142018522.

The product of its (nonzero) digits is 210000, while the sum is 39.

The square root of 426055557 is about 20641.1132693951. The cubic root of 426055557 is about 752.4692287355.

The spelling of 426055557 in words is "four hundred twenty-six million, fifty-five thousand, five hundred fifty-seven".